2003 Ducati SuperSport 800 SS Owners Manual - Page 143

Engine Twin cylinder, four-stroke, 90° "L" type, longitudinal. Bore: 88 mm. Stroke: 66 mm. Total displacement: 802 cu. cm. Compression ratio: 10.3±0.5:1. Max. power at crankshaft (95/1/EC): 54.8 kW - 74.5 HP at 8250 rpm. Max torque at crankshaft (95/1/EC): 70 Nm-7.1 Kgm at 6250 rpm. Important Do not exceed specified rotation speed limits under any running condition. Timing system Desmodromic (type) with two valves per cylinder, operated by four rocker arms (2 opening rockers and 2 closing rocker arms) and an overhead camshaft. It is operated by the crankshaft through spur gears, belt rollers and toothed belts. Desmodromic timing system (fig. 71) 1) Opening (or upper) rocker arm. 2) Opening rocker arm shim. 3) Split rings. 4) Closing (or lower) rocker arm shim. 5) Return spring for lower rocker arm. 6) Closing (or lower) rocker arm. 7) Camshaft. 8) Valve. E 1 5 2 3 4 6 7 8 fig. 71 67